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https://github.com/pi-hole/pi-hole
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Merge pull request #3283 from pi-hole/tweak/remove_firewall_config
Remove configureFirewall function, the call to it, and related tests
This commit is contained in:
Dan Schaper
GitHub
commit
df13b9c32a
@ -1780,45 +1780,6 @@ create_pihole_user() {
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fi
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}
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# Allow HTTP and DNS traffic
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configureFirewall() {
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printf "\\n"
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# If a firewall is running,
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if firewall-cmd --state &> /dev/null; then
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# ask if the user wants to install Pi-hole's default firewall rules
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whiptail --title "Firewall in use" --yesno "We have detected a running firewall\\n\\nPi-hole currently requires HTTP and DNS port access.\\n\\n\\n\\nInstall Pi-hole default firewall rules?" "${r}" "${c}" || \
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{ printf " %b Not installing firewall rulesets.\\n" "${INFO}"; return 0; }
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printf " %b Configuring FirewallD for httpd and pihole-FTL\\n" "${TICK}"
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# Allow HTTP and DNS traffic
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firewall-cmd --permanent --add-service=http --add-service=dns
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# Reload the firewall to apply these changes
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firewall-cmd --reload
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return 0
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# Check for proper kernel modules to prevent failure
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elif modinfo ip_tables &> /dev/null && is_command iptables ; then
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# If chain Policy is not ACCEPT or last Rule is not ACCEPT
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# then check and insert our Rules above the DROP/REJECT Rule.
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if iptables -S INPUT | head -n1 | grep -qv '^-P.*ACCEPT$' || iptables -S INPUT | tail -n1 | grep -qv '^-\(A\|P\).*ACCEPT$'; then
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whiptail --title "Firewall in use" --yesno "We have detected a running firewall\\n\\nPi-hole currently requires HTTP and DNS port access.\\n\\n\\n\\nInstall Pi-hole default firewall rules?" "${r}" "${c}" || \
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{ printf " %b Not installing firewall rulesets.\\n" "${INFO}"; return 0; }
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printf " %b Installing new IPTables firewall rulesets\\n" "${TICK}"
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# Check chain first, otherwise a new rule will duplicate old ones
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iptables -C INPUT -p tcp -m tcp --dport 80 -j ACCEPT &> /dev/null || iptables -I INPUT 1 -p tcp -m tcp --dport 80 -j ACCEPT
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iptables -C INPUT -p tcp -m tcp --dport 53 -j ACCEPT &> /dev/null || iptables -I INPUT 1 -p tcp -m tcp --dport 53 -j ACCEPT
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iptables -C INPUT -p udp -m udp --dport 53 -j ACCEPT &> /dev/null || iptables -I INPUT 1 -p udp -m udp --dport 53 -j ACCEPT
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iptables -C INPUT -p tcp -m tcp --dport 4711:4720 -i lo -j ACCEPT &> /dev/null || iptables -I INPUT 1 -p tcp -m tcp --dport 4711:4720 -i lo -j ACCEPT
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return 0
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fi
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# Otherwise,
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else
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# no firewall is running
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printf " %b No active firewall detected.. skipping firewall configuration\\n" "${INFO}"
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# so just exit
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return 0
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fi
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printf " %b Skipping firewall configuration\\n" "${INFO}"
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}
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#
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finalExports() {
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# If the Web interface is not set to be installed,
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@ -1969,10 +1930,6 @@ installPihole() {
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# Check if dnsmasq is present. If so, disable it and back up any possible
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# config file
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disable_dnsmasq
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# Configure the firewall
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if [[ "${useUpdateVars}" == false ]]; then
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configureFirewall
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fi
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# install a man page entry for pihole
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install_manpage
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@ -92,168 +92,6 @@ def test_setupVars_saved_to_file(Pihole):
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assert "{}={}".format(k, v) in output
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def test_configureFirewall_firewalld_running_no_errors(Pihole):
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'''
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confirms firewalld rules are applied when firewallD is running
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'''
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# firewallD returns 'running' as status
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mock_command('firewall-cmd', {'*': ('running', 0)}, Pihole)
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# Whiptail dialog returns Ok for user prompt
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mock_command('whiptail', {'*': ('', 0)}, Pihole)
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configureFirewall = Pihole.run('''
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source /opt/pihole/basic-install.sh
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configureFirewall
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''')
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expected_stdout = 'Configuring FirewallD for httpd and pihole-FTL'
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assert expected_stdout in configureFirewall.stdout
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firewall_calls = Pihole.run('cat /var/log/firewall-cmd').stdout
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assert 'firewall-cmd --state' in firewall_calls
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assert ('firewall-cmd '
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'--permanent '
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'--add-service=http '
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'--add-service=dns') in firewall_calls
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assert 'firewall-cmd --reload' in firewall_calls
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def test_configureFirewall_firewalld_disabled_no_errors(Pihole):
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'''
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confirms firewalld rules are not applied when firewallD is not running
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'''
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# firewallD returns non-running status
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mock_command('firewall-cmd', {'*': ('not running', '1')}, Pihole)
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configureFirewall = Pihole.run('''
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source /opt/pihole/basic-install.sh
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configureFirewall
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''')
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expected_stdout = ('No active firewall detected.. '
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'skipping firewall configuration')
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assert expected_stdout in configureFirewall.stdout
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def test_configureFirewall_firewalld_enabled_declined_no_errors(Pihole):
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'''
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confirms firewalld rules are not applied when firewallD is running, user
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declines ruleset
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'''
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# firewallD returns running status
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mock_command('firewall-cmd', {'*': ('running', 0)}, Pihole)
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# Whiptail dialog returns Cancel for user prompt
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mock_command('whiptail', {'*': ('', 1)}, Pihole)
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configureFirewall = Pihole.run('''
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source /opt/pihole/basic-install.sh
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configureFirewall
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''')
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expected_stdout = 'Not installing firewall rulesets.'
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assert expected_stdout in configureFirewall.stdout
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def test_configureFirewall_no_firewall(Pihole):
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''' confirms firewall skipped no daemon is running '''
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configureFirewall = Pihole.run('''
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source /opt/pihole/basic-install.sh
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configureFirewall
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''')
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expected_stdout = 'No active firewall detected'
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assert expected_stdout in configureFirewall.stdout
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def test_configureFirewall_IPTables_enabled_declined_no_errors(Pihole):
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'''
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confirms IPTables rules are not applied when IPTables is running, user
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declines ruleset
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'''
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# iptables command exists
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mock_command('iptables', {'*': ('', '0')}, Pihole)
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# modinfo returns always true (ip_tables module check)
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mock_command('modinfo', {'*': ('', '0')}, Pihole)
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# Whiptail dialog returns Cancel for user prompt
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mock_command('whiptail', {'*': ('', '1')}, Pihole)
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configureFirewall = Pihole.run('''
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source /opt/pihole/basic-install.sh
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configureFirewall
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''')
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expected_stdout = 'Not installing firewall rulesets.'
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assert expected_stdout in configureFirewall.stdout
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def test_configureFirewall_IPTables_enabled_rules_exist_no_errors(Pihole):
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'''
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confirms IPTables rules are not applied when IPTables is running and rules
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exist
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'''
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# iptables command exists and returns 0 on calls
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# (should return 0 on iptables -C)
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mock_command('iptables', {'-S': ('-P INPUT DENY', '0')}, Pihole)
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# modinfo returns always true (ip_tables module check)
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mock_command('modinfo', {'*': ('', '0')}, Pihole)
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# Whiptail dialog returns Cancel for user prompt
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mock_command('whiptail', {'*': ('', '0')}, Pihole)
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configureFirewall = Pihole.run('''
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source /opt/pihole/basic-install.sh
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configureFirewall
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''')
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expected_stdout = 'Installing new IPTables firewall rulesets'
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assert expected_stdout in configureFirewall.stdout
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firewall_calls = Pihole.run('cat /var/log/iptables').stdout
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# General call type occurances
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assert len(re.findall(r'iptables -S', firewall_calls)) == 1
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assert len(re.findall(r'iptables -C', firewall_calls)) == 4
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assert len(re.findall(r'iptables -I', firewall_calls)) == 0
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# Specific port call occurances
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assert len(re.findall(r'tcp --dport 80', firewall_calls)) == 1
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assert len(re.findall(r'tcp --dport 53', firewall_calls)) == 1
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assert len(re.findall(r'udp --dport 53', firewall_calls)) == 1
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assert len(re.findall(r'tcp --dport 4711:4720', firewall_calls)) == 1
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def test_configureFirewall_IPTables_enabled_not_exist_no_errors(Pihole):
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'''
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confirms IPTables rules are applied when IPTables is running and rules do
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not exist
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'''
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# iptables command and returns 0 on calls (should return 1 on iptables -C)
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mock_command(
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'iptables',
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{
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'-S': (
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'-P INPUT DENY',
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'0'
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),
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'-C': (
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'',
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1
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),
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'-I': (
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'',
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0
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)
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},
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Pihole
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)
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# modinfo returns always true (ip_tables module check)
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mock_command('modinfo', {'*': ('', '0')}, Pihole)
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# Whiptail dialog returns Cancel for user prompt
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mock_command('whiptail', {'*': ('', '0')}, Pihole)
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configureFirewall = Pihole.run('''
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source /opt/pihole/basic-install.sh
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configureFirewall
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''')
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expected_stdout = 'Installing new IPTables firewall rulesets'
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assert expected_stdout in configureFirewall.stdout
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firewall_calls = Pihole.run('cat /var/log/iptables').stdout
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# General call type occurances
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assert len(re.findall(r'iptables -S', firewall_calls)) == 1
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assert len(re.findall(r'iptables -C', firewall_calls)) == 4
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assert len(re.findall(r'iptables -I', firewall_calls)) == 4
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# Specific port call occurances
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assert len(re.findall(r'tcp --dport 80', firewall_calls)) == 2
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assert len(re.findall(r'tcp --dport 53', firewall_calls)) == 2
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assert len(re.findall(r'udp --dport 53', firewall_calls)) == 2
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assert len(re.findall(r'tcp --dport 4711:4720', firewall_calls)) == 2
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def test_selinux_not_detected(Pihole):
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'''
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confirms installer continues when SELinux configuration file does not exist
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